Which of the following are the electrical-layer overheads of OTN? (Multiple Choice)
A . OPUk
B . ODUk
C . OCh
D . OTUk
Answer: ABD
Which of the following are the electrical-layer overheads of OTN? (Multiple Choice)
A . OPUk
B . ODUk
C . OCh
D . OTUk
Answer: ABD